R91.1  – Solitary pulmonary nodule

R91.1 – Solitary pulmonary nodule

Discover the clinical description, billing details, and commonly used R91.1 - Solitary Pulmonary Nodule codes. Learn about its diagnosis, synonyms, and evaluation methods.

By Katherine Ellison on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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Commonly asked questions

Diagnostic tests commonly used to evaluate SPNs include chest imaging (X-ray, CT scan), PET scan, CT-guided biopsy, needle aspiration, and surgical excision or resection, if warranted.

While most solitary pulmonary nodules are benign, some can be cancerous. Further evaluation, including diagnostic tests and clinical judgment, is necessary to determine their nature and potential malignancy.

Risk factors associated with SPNs include smoking history, older age, exposure to certain occupational or environmental hazards, and underlying lung conditions. However, SPNs can also occur in individuals without any apparent risk factors.

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